Hello! First off, love your program! It's a very slick piece of software. Just wondering if you had considered an autosave option of some sort? I just spent the last 4 hours importing and grooming systems for a trip I'm taking to North Carolina, and.. well... Freescan crapped out on me. I was importing another system when the Import screen seemed to hang up on me. So I closed the window thinking I would try it again... and the entire program exited. After realizing I hadn't saved my work (my bad, I know) and banging my head off the desk for a few minutes I thought maybe an autosave would be a nice feature

Also, how about an Undo function? After accidentally deleting a System instead of a Group I thought that may be a handy feature too!